Topic
Butt welding
About: Butt welding is a research topic. Over the lifetime, 7153 publications have been published within this topic receiving 44467 citations.
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07 May 2010
TL;DR: In this article, a welding system is provided, in which two electrodes are directed at a joint between two work pieces and the electrodes are energized with DC pulse or AC welding waveforms at a controlled waveform phase angle.
Abstract: A welding system is provided, in which two electrodes are directed at a joint between two work pieces and the electrodes are energized with DC pulse or AC welding waveforms at a controlled waveform phase angle. The systems include a synchronizing controller to synchronize the welding waveforms, and a work point allocation system provides one or more work point values to the welding machines to provide synergic control of the welding according to a user selected system work point value or parameter. The systems and methods further provide for synchronized work point value modulation for the opposite sides of a dual fillet weld. The system and method further provide a high energy heat source that directs intense heat at a portion of the weld joint to improve weld penetration.
37 citations
TL;DR: In this paper, a study of vibration butt welds between plaques of polypropylene has been made and the quality of the welds, as determined by impact tests, has been examined as a function of the welding variables: pressure and vibration amplitude.
Abstract: A study has been made of vibration butt welds between plaques of polypropylene. The quality of the welds, as determined by impact tests, has been examined as a function of the welding variables: pressure and vibration amplitude. In addition, the microstructure of the welds has also been examined, classified, and correlated with the welding variables and weld quality. Penetration as a function of time shows three distinct regimes and It is shown that the impact strength of the welds is independent of time once the third regime is reached. The time required to reach the third regime decreases as pressure or amplitude increases and is more sensitive to amplitude of vibration than to pressure. The highest quality welds were produced at low pressure and low amplitude with corresponding long times to reach regime three and exhibited a unique, readily identifiable microstructure.
37 citations
TL;DR: In this paper, an integrated finite element method-dual boundary element method (FEM-DBEM) procedure was proposed and applied to simulate multiple crack propagation, with allowance for manufacturing effects.
37 citations
TL;DR: In this article, the combined effects of the MIG-TIG double-sided arc on the weld appearance and interface properties were investigated in three aspects: weld appearance, interfacial properties and joint tensile strength.
37 citations
TL;DR: In this article, a laser-welding technique for the fabrication of the hydraulic valves is presented, in which the butt welds joining the AISI304L to the free-cutting steel tubular parts, which make up the main valve cylinder, are performed in such a way as to control solidification cracking and micro-fissuring.
37 citations